Alternative Control Laws for Automotive Active Suspensions

[+] Author and Article Information
C. Yue

AT&T, Bell Labs., Holmdel, N.J.

T. Butsuen


J. K. Hedrick

University of California, Berkeley, Calif. 94720

J. Dyn. Sys., Meas., Control 111(2), 286-291 (Jun 01, 1989) (6 pages) doi:10.1115/1.3153048 History: Received March 20, 1988; Revised June 15, 1988; Online July 21, 2009


A two degree of freedom (1/4 car model) is used to evaluate alternative linear control laws. Control laws considered are full state feedback, sprung mass absolute velocity feedback and an LQG regulator using suspension deflection as the measurement. It is shown that all three can yield improvements to the sprung mass ride quality but that overall the LQG regulator using suspension deflection provides the best trade-off between ride quality, suspension packaging and road holding constraints.

Copyright © 1989 by ASME
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